equatorialis, Opisthopterus Hildebrand [S. F.] 1946:93, Fig. 18 [Bulletin of the United States National Museum No. 189; ref. 2161] Puerto Pizarro, Peru, 3°29'S, 80°26'W. Holotype: USNM 127807. Paratypes: USNM 127808 (4), Gov't of Peru (1). •Valid as Opisthopterus equatorialis Hildebrand 1946 -- (Whitehead 1985:292 [ref. 5141], Bussing & López S. 1994:48 [ref. 23101], Whitehead & Rodriguez-Sánchez in Fischer et al. 1995:1417 [ref. 22830] as equitorialis, Chirichigno F. & Vélez D. 1998:141 [ref. 24555], González-Murcia et al. 2019:290 [ref. 36544], Page et al. 2023:60 [ref. 40505], Siccha-Ramirez et al. 2023:108 [ref. 40816], Fricke et al. 2024:146 [ref. 41622]). Current status: Valid as Opisthopterus equatorialis Hildebrand 1946. Pristigasteridae. Distribution: Eastern Pacific: Chiapas (Mexico) south to Ecuador. IUCN (2020): Least Concern. Habitat: brackish, marine.